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feat: add PR insights analytics dashboard (#23215)

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## What

Adds a new admin-only **PR Insights** page for the `/agents` analytics
view — a dashboard for engineering leaders to understand code shipped by
AI agents.

### Backend
- `GET /api/v2/chats/insights/pull-requests` — admin-only endpoint
- 4 SQL queries in `chatinsights.sql` aggregating `chat_diff_statuses`
joined with chat cost data (via root chat tree rollup)
- Runs 5 parallel DB queries: current summary, previous summary (for
trends), time series, per-model breakdown, recent PRs
- SDK types auto-generate to TypeScript

### Frontend (`PRInsightsView`)
- **Stat cards**: PRs created, Merged, Merge rate, Lines shipped,
Cost/merged PR — with trend badges comparing to previous period
- **Activity chart**: Stacked area chart (created/merged/closed) using
git color tokens (`git-added-bright`, `git-merged-bright`,
`git-deleted-bright`)
- **Model performance table**: Per-model PR counts, inline merge rate
bars, diff stats, cost breakdown
- **Recent PRs table**: Status badges, review state icons, author info,
external links
- **Time range filter**: 7d/14d/30d/90d button group
- **4 Storybook stories**: Default, HighPerformance, LowVolume, NoPRs

### Data source
All PR data comes from the existing `chat_diff_statuses` table
(populated by the `gitsync.Worker` background job that polls GitHub
every 120s). No new data collection required.

### Screenshot
View in Storybook: `pages/AgentsPage/PRInsightsView`
This commit is contained in:
Kyle Carberry
2026-03-18 15:29:29 +00:00
committed by GitHub
parent 4dd8531f37
commit d6fef96d72
24 changed files with 2774 additions and 45 deletions
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coderd/database/querier.go
+12
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@@ -341,6 +341,18 @@ type sqlcQuerier interface {
// GetOrganizationsWithPrebuildStatus returns organizations with prebuilds configured and their
// membership status for the prebuilds system user (org membership, group existence, group membership).
GetOrganizationsWithPrebuildStatus(ctx context.Context, arg GetOrganizationsWithPrebuildStatusParams) ([]GetOrganizationsWithPrebuildStatusRow, error)
// Returns PR metrics grouped by the model used for each chat.
GetPRInsightsPerModel(ctx context.Context, arg GetPRInsightsPerModelParams) ([]GetPRInsightsPerModelRow, error)
// Returns individual PR rows with cost for the recent PRs table.
GetPRInsightsRecentPRs(ctx context.Context, arg GetPRInsightsRecentPRsParams) ([]GetPRInsightsRecentPRsRow, error)
// PR Insights queries for the /agents analytics dashboard.
// These aggregate data from chat_diff_statuses (PR metadata) joined
// with chats and chat_messages (cost) to power the PR Insights view.
// Returns aggregate PR metrics for the given date range.
// The handler calls this twice (current + previous period) for trends.
GetPRInsightsSummary(ctx context.Context, arg GetPRInsightsSummaryParams) (GetPRInsightsSummaryRow, error)
// Returns daily PR counts grouped by state for the chart.
GetPRInsightsTimeSeries(ctx context.Context, arg GetPRInsightsTimeSeriesParams) ([]GetPRInsightsTimeSeriesRow, error)
GetParameterSchemasByJobID(ctx context.Context, jobID uuid.UUID) ([]ParameterSchema, error)
GetPrebuildMetrics(ctx context.Context) ([]GetPrebuildMetricsRow, error)
GetPrebuildsSettings(ctx context.Context) (string, error)